Coffee urn



2 Shee-ts-Sheet 2 K. LEVI COFFEE URN Filed Dec. 23. 1927 Oct. 2,v 1928.

pm n M llll Patented Get. 2, 1928.

UNl''ED STATES retains raras-r ortica- KARL Levi, or .ivrrmmarotrsivrunnsorn.

COFFEE univ.

Y Application yfiled December 23, 1927;. Serial No. 242,159.

poured over the Vcoffee and after aboutv fifteenl minutes the contentsof the urn is repoured over the coffee from toto four times in ordertoextract as much as possibleof the strength from the grounds. Owing tothe tendency of thevground coffee to pack tightly in the bag,-,especially at the .centen-it is not feasible to use pulverized coffee.'Thus,- yconsiderable timeiis lost in getting a brew of the desiredstrength owing .to the necessity Hof repouring as aforesaid."Furthermoref-much of the nutritive Vqualities .of the brewrthe originalflavor, volatileI oil, arelost'as aresult of the .continuous `steamingwhich is .incidental to theextended boiling period in present `day.coffee brewing.

It is therefore the primary jobjectv of my Ainvention to overcome theaforenotedobjee-` .tions and to provide anovel method and apparatuswhereby pulverized coffee may be used in lieu of Vcoarse grouncL-to theend that all desirable properties ofthecofee may `be gotten therefromingone pouring ,-.the brew derived being of full strength, aroma, flavorand stimulating characteristics, and perfectly filtered.

Afurther obl ect of the inventionis vto effeet, through the method andapparatusv to'be hereinafter descr-ibedf'fa greater saving in coffeethan has heretofore been possible.

. Theforegoing and other objects of the invention are attained by meansof a novel arrangement of 4parts to be hereinafter described andclaimed, and in order that the same/may be bettery understood., rference is had to the accompanying drawings forminga part ofthisspecication.l It isy to beunderstood, however, that various changesand modifications may be .maple without departing from the spirit andscope of the subject matter claimed.

Inthe drawings, wherein the same reference characters havebeen used todesignate -the'same parts in all views,-

lafter more fully described.

Figure l is a longitudinal sectional view through an urn, andillustrating the applica- I tion of my invention thereto Y Figure 2 is agroup perspective view of certain of the 'parts disassembled;

Figure 3 is a detailed sectional yview on en larged4 scale and showing aportion of the stand and perforated plate assembly;

Figure 4t is a perspective view,-partly broken, and pai'tly in .sectionshowing an auxill iaryvessel employed in carrying'out the invention,-andshowing associated therewith the perforated plate', and

Figure 5 is a fragmentary perspective view, partly broken and partly insection of the coffee bag. f

` Referring specifically to' the drawings', numeral l denotes azcolfe'eurn of the type commonly used in'restaurants; hotels andthe like.'Supported in the urn lisp a stand which coniprehends a ring or annulus 2having' d`epending legs 8 whichk flatly engage the side' of the urnchamber and are supported by the bott-om thereof. rlhe'legs 3 areypreferably riveted to the outer surface .of ring 2 as at ifa-and theirlower ends are curved inwardly as at 3EL to conform to the wall curveadjacent the vbottom of the urn "chamber,

The ring or annulus 2 is relatively smaller in diameter than the urncham-ber and is spaced from ythe wall thereofas shown, so as lto Vdefinea support for the perforated plate 5,-which latter acts as a rest for'a'co'lfee bag 6. The outwardly flaring upstandiing'flange 5L ofthe plate'has a three-fold function. l+`iist,-it serves to confine thebag 6 in apan-calie-li'ke form so that it will be spread over the'cntire area ofthe perforated plate 5. Secondly,flange aiacts as a seal to enthe urnchamber wall andprevent water from passing around the edges .of theperforated plate 5. Thirdly, fiange 5a dehnesan attaching portion forthe upstanding lifting handles 7 which are rivetedor' otherwiseAfastened to the inner1 surface thereof as indii cated at 8. Handles 7have hooked ,ends so that they may be conveniently graspedwhen insertingor .removing the' perforated plate 5.

ln carrying out the invention", there 'is further'employed a vessel 9which is shaped;v like 'the flower half of a double boiler,-there be'-ling provided a shoulder 10 designed .to sup'- porty the perforatedplate 5 at a certain stage of the process or method, as will befhereinf-The' urn l has an inlet` spout 11 for disl 1" the plat-e 5.

charging hot water into the urn chamber and i be used with good results.

In practicing the invention,-the stand 2, 3 is inserted in the urnchamber, whereupon the perforated plate 5 is inserted to rest upon thering 2 and the coffee bag deposited upon It is to be noted that the bag6 is only partially filled so that it may be spread over the whole areaof the plate 5 whereby the layer of finely ground vcoee will berelatively thin and of uniform thickness at all points. The apertures ofthe plate 5 are relativelyv small so as to retard the flow of coeesolution therethrough to a considerable extent. This makes it possibleto secure a complete extractonof the desired properties from thel coffeewith but one pouring through the plate 5 and bag 6,-and of course y it`is to be understood ,that the pulverized character of the coffee in bag6, and the thinlayer distribution of the coffee over the entire area ofthe plate 5 are very important contributing factors to this end.

As heretofore intimated, he boiling water, two-thirds of intended'quantity, is introduced into the urn chamber through the spout ll.

- The sheer weight of the water upon the bag 6 on plate 5 will overcomethe resisting power .of the pulverized mass of coffee,-the smalllperforations of the plate 5 retarding the downward flow sufficiently topermit full extraction of the desirable portion of the coffee,

as aforesaid.

table. The perforated plate 5 with the coffee bag6 therein is removed'vas aforesaid for two reasons. In the first place the strength of thefluid when approximately two thirds of the water has passed through thebag 6 is about half again as strong as desired. Thus, plate 5 with bag 6may be said to have been removed for economy purposes. In the secondplace',- if the level of the liquid isvpermitted to' go above the plate5 there will be extracted from the coffee in the bag 6 its undesirableastringent and rigid attributes; also the resultant steaming which isincidental to boiling will ties.

rlhe drippings from the perforated plate 5 into the vessel 9 are pouredinto the urn l and subsequently the last third part of the water ispoured into'the urn. The resultant liquid in the urn chamber may bestirred' or the liquid may be drawn off and poured in through the top ofthe urn so as to kmake the contents of the urn of uniform strength.

From the foregoing description,taken in connection with the accompanyingdrawings it is believedv that the following advantageous features of myinvention will be readily understood and appreciated by those skilled inthe art (l) great expedience in brewing large quantities of coffee; (2)increased economy in that pulver-ized coffee is made available for useand yields to action ofhot water to a far greater extent than coarseground coee; (3) saving of time over old method in thatboiling,

steaming and repouring to secure full extract-ion from the grounds isunnecessary; (4f) increasedsanitation; (5) saving of time andsimplification of the process to the extent that a relativelyinexperienced person vmay produce a beverage of consistently highquality.

Having thus described my invention, what l claim as new and desire tosecure by Letters Patent is:

l. In a coffee urn, an annulus of smaller diameter than the urn chamberand spaced from the walls thereof, offset Adepending legs carried bysaid annulus and fia'tlyeng'aging the walls of the chamber to space the'annulus therefrom, the lower ends of said legs engaging the bottom ofthe chamber to vmaintain the annulus at a predetermined height, aperforated plate removably supported upon said annulus, saidplate havinga marginal upwardly and outwardly inclined circumferential flangeengaging Vthe chamber wallto act as a seal and divert liquid from thechamber wall onto the plate, said fiange serving to confine a coffee bagto entirely cover said 'plate to provide al uniform layer of coHee atall points thereon, upwardly extending handles carried by said plateflange andl securedv to the inner surface thereof, and said handles eX-tending toa point adjacent the top of the urn and contacting with theside walls of the urn chamber.

2. The combination set forth in claim 1,-- and said handles beingrelatively resilient and having inturned hooks at their upper ends.

3. The combination set forth in claim 1,--V

and said legs being relatively resilient to frictionally engage theurn-chamber wall whereby to tend to hold the annulus in place andagainstyshifting.

4. VIn' a coffee urn, an upstanding support positionab-le therein, aperforated plate 'reinovably positionable upon said support, said platehaving a marginal upwardly and outwardly extending circumferentialflange engaging the inner wall ofsaid urn to 'act-as a seal and divertliquid on to said plate, :L

coffee bag positionable upon said perforated plate, sind iang'e engagingsaid bag to eon.

fine the sides thereof whereby a uniform layer of Coffee may-beprovided' upon said plate and confined by said bag and ange, and saidplate having means whereby it can be inserted or removed from said urn.

5. ylhe combinationl set forth in claimfi, and saidsupport having meansengaging the 10 inner wall of said urn whereby to prevent transverseshifting of the support within the urn. i

In testimony whereof I aifix my signature.

KARL LEVI.

